Nikon takes its digital camera line as seriously as their film cameras.
Some of the Nikon camera models sport interchangeable lens for a variety of metered images. Exposure modes from some of the high-end Nikons are impressive, with up to 15 scenic modes already pre-defined. White balance settings and saturation adjustments, clear compression options for JPEG files, mixed with software editing brings a power pack combination to modify images both before and after shooting.
Interpolation models that allow for up to 6 megapixels are becoming more and more common. Exposure modes are worth looking at as they will vary with the higher-end models.